SERS-active linear barcodes by microfluidic-assisted patterning

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buir.contributor.authorSerhatlıoğlu, Murat
buir.contributor.orcidSerhatlıoğlu, Murat|0000-0003-2083-6756
dc.citation.epage18en_US
dc.citation.spage11en_US
dc.citation.volumeNumber584en_US
dc.contributor.authorPekdemir, S.
dc.contributor.authorIpekci, H. H.
dc.contributor.authorSerhatlıoğlu, Murat
dc.contributor.authorElbuken, C.
dc.contributor.authorOnses, M. S.
dc.date.accessioned2022-02-18T07:40:42Z
dc.date.available2022-02-18T07:40:42Z
dc.date.issued2020-09-28
dc.description.abstractSimple, low-cost, robust, and scalable fabrication of microscopic linear barcodes with high levels of complexity and multiple authentication layers is critical for emerging applications in information security and anti-counterfeiting. This manuscript presents a novel approach for fabrication of microscopic linear barcodes that can be visualized under Raman microscopy. Microfluidic channels are used as molds to generate linear patterns of end-grafted polymers on a substrate. These patterns serve as templates for area-selective binding of colloidal gold nanoparticles resulting in plasmonic arrays. The deposition of multiple taggant molecules on the plasmonic arrays via a second microfluidic mold results in a linear barcode with unique Raman fingerprints that are enhanced by the underlying plasmonic nanoparticles. The width of the bars is as small as 10 μm, with a total barcode length on the order of 100 μm. The simultaneous use of geometric and chemical security layers provides a high level of complexity challenging the counterfeiting of the barcodes. The additive, scalable, and inexpensive nature of the presented approach can be easily adapted to different colloidal nanomaterials and applications.en_US
dc.embargo.release2022-09-28
dc.identifier.doi10.1016/j.jcis.2020.09.087en_US
dc.identifier.eissn1095-7103
dc.identifier.issn0021-9797
dc.identifier.urihttp://hdl.handle.net/11693/77487
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://doi.org/10.1016/j.jcis.2020.09.087en_US
dc.source.titleJournal of Colloid and Interface Scienceen_US
dc.subjectAnti-counterfeitingen_US
dc.subjectSERSen_US
dc.subjectPlasmonicsen_US
dc.subjectMicrofluidicsen_US
dc.subjectColloidal nanoparticlesen_US
dc.titleSERS-active linear barcodes by microfluidic-assisted patterningen_US
dc.typeArticleen_US

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